CN112929185A - Information backtracking method and equipment - Google Patents
Information backtracking method and equipment Download PDFInfo
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- CN112929185A CN112929185A CN201911235402.9A CN201911235402A CN112929185A CN 112929185 A CN112929185 A CN 112929185A CN 201911235402 A CN201911235402 A CN 201911235402A CN 112929185 A CN112929185 A CN 112929185A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
- H04L12/1831—Tracking arrangements for later retrieval, e.g. recording contents, participants activities or behavior, network status
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
- H04L51/21—Monitoring or handling of messages
- H04L51/216—Handling conversation history, e.g. grouping of messages in sessions or threads
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Abstract
The embodiment of the invention provides an information backtracking method and equipment, wherein the method comprises the following steps: when a first communication device accesses a group, determining a second communication device in at least one communication device in the group; sending a backtracking message to the second communication device, wherein the backtracking message comprises a target time interval and is used for requesting the second communication device for backtracking target information in the target time interval; target information is received from the second communication device. In the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an information backtracking method and equipment.
Background
The current common scheme for backtracking various social group information based on the central network technology is as follows:
referring to fig. 1, a central network architecture is shown, where a and B are in the same group, chat information between them is forwarded through a central server, and a wants to send information to B, must pass through the central server. The central server stores the information and then forwards the information to B, so that B can obtain the information. The same works for chat content sent by B to a. The central server stores chat information of A and B at the same time. The information sent by the opposite side when the A or B is not on line can be pushed to the A or B by the central server after the information is on line, so that the information backtracking is realized.
If C joins the group at this time, a and B want to synchronize their previous chat records to C or C wants to actively acquire A, B previous chat records, which cannot be achieved in the current information backtracking scheme, and A, B can only make C acquire the previous chat records by means of retransmission.
For the future development of the mobile internet to the internet of things, the internet of things is a decentralized network, and no central server is used for storing and forwarding information, so that the information backtracking scheme cannot be applied.
Disclosure of Invention
The embodiment of the invention provides an information backtracking method, which solves the problem that information backtracking cannot be carried out in a group in a decentralized network.
According to a first aspect of the embodiments of the present invention, there is provided an information backtracking method applied to a first communication device in a group without a centralized network, the method including:
determining a second communication device in at least one communication device in the group when accessing the group;
sending a backtracking message to the second communication device, wherein the backtracking message comprises a target time interval and is used for requesting the second communication device to backtrack target information in the target time interval;
receiving the target information from the second communication device.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the method further comprises:
periodically sending heartbeat messages to each communication device in the group, wherein the heartbeat messages comprise user related information corresponding to the communication devices;
and when the heartbeat message is received from other communication equipment, determining the Received Signal Strength Indication (RSSI) information of the communication equipment corresponding to the heartbeat message.
Optionally, the determining the second communication device in the at least one communication device in the group includes:
and according to the RSSI information, determining the communication equipment which has the maximum RSSI signal intensity and is on line in the group as the second communication equipment.
Optionally, before the determining, according to the RSSI information, the communication device with the highest RSSI signal strength in the group as the second communication device, the method further includes:
determining a number of communication devices in the group that are online;
when the number of the on-line communication equipment is more than 2, selecting 2 communication equipment with the earliest time for entering the group;
accordingly, determining the communication device with the highest RSSI signal strength in the group as the second communication device comprises:
and determining the communication device with the maximum RSSI signal strength in the 2 communication devices with the earliest group entering time as the second communication device.
Optionally, when the first communication device is newly accessed to the group, before the sending the trace-back packet to the second communication device, the method further includes:
requesting a group owner of the group to start information backtracking;
and when the group owner of the group agrees, executing the step of sending a backtracking message to the second communication equipment.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
According to a second aspect of the embodiments of the present invention, there is provided an information backtracking method applied to a second communication device in a group without a centralized network, the method including:
receiving a backtracking message from a first communication device, wherein the backtracking message comprises a target time interval;
determining target information within the target time interval;
and sending the target information to the first communication equipment.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the method further comprises:
periodically sending heartbeat messages to each communication device in the group, wherein the heartbeat messages comprise user related information corresponding to the communication devices;
and when the heartbeat message is received from other communication equipment, determining the RSSI information of the communication equipment corresponding to the heartbeat message.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
According to a third aspect of embodiments of the present invention, there is provided a first communication device including: a first transceiver and a first processor, wherein,
the first processor configured to determine a second communication device among at least one communication device in the group when accessing the group;
the first transceiver is configured to send a backtracking message to the second communication device, where the backtracking message includes a target time interval, and the backtracking message is used to request the second communication device to backtrack target information in the target time interval;
the first transceiver is further configured to receive the target information from the second communication device.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the first transceiver is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the first processor is further configured to determine, when the heartbeat packet is received from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
Optionally, the first processor is further configured to determine, according to the RSSI information, the communication device in the group that has the highest RSSI signal strength and is online as the second communication device.
Optionally, the first processor is further configured to determine a number of communication devices in the group that are online;
the first processor is further configured to determine that when the number of the online communication devices is greater than 2, select 2 communication devices with the earliest group entry time;
the first processor is further configured to determine, as the second communication device, a communication device with a largest RSSI signal strength among the 2 communication devices with the earliest group entry time.
Optionally, the first transceiver is further configured to request a group owner of the group to start information backtracking;
the first processor is further configured to execute the step of sending a backtracking packet to the second communication device when the group owner of the group agrees.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
According to a fourth aspect of the embodiments of the present invention, there is provided a second communication apparatus including: a second transceiver and a second processor, wherein,
the second transceiver is configured to receive a backtracking packet from the first communication device, where the backtracking packet includes a target time interval;
the second processor is configured to determine target information within the target time interval;
the second transceiver is further configured to send the target information to the first communication device.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the second transceiver is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the second processor is further configured to determine, when the heartbeat packet is received from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
According to a fifth aspect of the embodiments of the present invention, there is provided a communication device, including a processor, a memory, and a program stored in the memory and being executable on the processor, where the program, when executed by the processor, implements the steps of the information backtracking method according to the first aspect, or implements the steps of the information backtracking method according to the second aspect.
According to a sixth aspect of the embodiments of the present invention, there is provided a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps of the information backtracking method according to the first aspect, or the steps of the information backtracking method according to the second aspect.
In the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional centralized network group architecture;
FIG. 2 is a diagram of a communication architecture according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a group architecture of a decentralized network according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating an information backtracking method according to an embodiment of the present invention;
fig. 5 is a second schematic flow chart of the information backtracking method according to the embodiment of the present invention;
fig. 6 is a third schematic flow chart of an information backtracking method according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a first communication device according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second communication device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Herein, relational terms such as "first" and "second", and the like, are used solely to distinguish one from another of like names, and do not imply a relationship or order between the names.
The technology described herein is not limited to a 5th-generation (5G) system and a later-evolution communication system, and is not limited to an LTE/LTE evolution (LTE-a) system, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.
The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system can implement radio technologies such as Ultra Mobile Broadband (UMB), evolved-UTRA (E-UTRA)), IEEE 802.11 (Wi-Fi), IEEE802.16 (WiMAX)), IEEE 802.20, Flash-OFDM, and the like. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.
In the embodiment of the present invention, the communication device in the group may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), or the like.
The communication devices in the group may also be accessory devices of a mobile phone, a tablet computer, etc., for example: radacat equipment.
Referring to fig. 2, a scenario that the communication device is a Radacat device is shown, the Radacat device is connected with a mobile phone by using bluetooth, and the Radacat device is controlled by an application installed on the mobile phone. The Radacat device may establish ad-hoc network groups to receive and transmit information without an operator network, the groups being groups without a centralized network.
Referring to fig. 3, a group of decentralized networks is shown, including users A, B, C, D, each of which is capable of sending information to and receiving information from other users.
Referring to fig. 4, an embodiment of the present invention provides an information backtracking method, where an execution subject of the method is a first communication device in a group without a centralized network, and the method includes the following specific steps:
step 401: when accessing a group, determining a second communication device in at least one communication device in the group;
in the embodiment of the present invention, the first communication device accessing the group may include two scenarios, one scenario is that the first communication device is an old member in the group, communication of the first communication device is interrupted due to reasons such as power failure and restart, and the first communication device is accessed into the group again after communication is recovered; another scenario is that the first communication device is a new member that has just joined the group, and the access group is a group that the first communication device joins for the first time.
When the first communication device needs to acquire information during a non-access period after accessing the group, that is, when information backtracking needs to be performed, one second communication device is selected from other communication devices in the group, and the second communication device performs information backtracking for the second communication device, which may be referred to as a backtracking point.
Step 402: sending a backtracking message to the second communication equipment;
in the embodiment of the present invention, the trace-back message includes a target time interval, and the trace-back message is used to request the second communication device for tracing back the target information in the target time interval.
Specifically, when the first communication device is the disconnection reconnection group, the target time interval is a time interval between the disconnection time point and the reconnection time point of the first communication device, for example: after the first communication device is powered off, 30 minutes of charging is performed, and the charging time of 30 minutes is the target time interval.
When the first communication device is a new access group, the target time interval is a time interval selected by the first communication device, for example: a time interval selected autonomously by a user of the first communication device.
Step 403: receiving target information from a second communication device;
in the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Referring to fig. 5, an embodiment of the present invention provides an information backtracking method, where an execution subject of the method is a second communication device in a group without a centralized network, and the method includes the following specific steps:
step 501: receiving a backtracking message from a first communication device;
in the embodiment of the present invention, the trace-back message includes a target time interval, where the target time interval represents a time interval in which the first communication device needs to perform information trace-back.
Specifically, when the first communication device is the disconnection reconnection group, the target time interval is a time interval between the disconnection time point and the reconnection time point of the first communication device, for example: after the first communication device is powered off, 30 minutes of charging is performed, and the charging time of 30 minutes is the target time interval.
When the first communication device is a new access group, the target time interval is a time interval selected by the first communication device, for example: a time interval selected autonomously by a user of the first communication device.
Step 502: determining target information in a target time interval;
in the embodiment of the invention, the second communication device determines the information in the group in the corresponding time interval as the target information according to the target time interval.
Step 503: transmitting the target information to the first communication device;
in the embodiment of the invention, when the second communication device backtracks the information for the first communication device, only the target information is sent to the first communication device, but not sent to other communication devices, so that the total amount of information is reduced, and the communication resources are saved.
In the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Referring to fig. 6, an embodiment of the present invention provides another information backtracking method, where an execution subject of the method is a first communication device in a group without a centralized network, and the method includes the following specific steps:
step 601: when accessing a group, determining the number of communication devices on line in the group;
in the embodiment of the present invention, when the first communication device needs to perform information backtracking, the number of the communication devices in the group that are online is determined first, and since a backtracking point needs to be selected from other communication devices in the group as the backtracking information of the first communication device, the backtracking point needs to be in an online state, the first communication device needs to select the backtracking point from the communication devices in the group that are online.
It can be understood that if none of the members in the group are online, no member can be prompted to be online on the first communication device, and information backtracking cannot be performed.
Step 602: judging whether the number of the on-line communication equipment is greater than 2, if so, executing a step 603, otherwise, executing a step 605;
step 603: selecting 2 communication devices with the earliest group entering time;
in the embodiment of the invention, because the information needing to be backtracked is the information in the past time, the communication device with the earliest group entering time is selected, and the selected communication device can be ensured to backtrack the information in the largest possible time range.
Step 604: determining the communication device with the maximum RSSI signal strength among the 2 communication devices with the earliest group entering time as a second communication device, and then executing the step 606;
step 605: determining the communication device with the maximum RSSI signal strength in the group as a second communication device, and then executing step 606;
in the embodiment of the present invention, a Received Signal Strength Indication (RSSI) is an optional part of the radio transmission layer, and is used to determine the link quality and whether to increase the broadcast transmission Strength.
The distance between a signal point and a receiving point is determined according to the strength of the received signal, and then positioning calculation is carried out according to corresponding data. This measurement typically does not include antenna gain or loss of the transmission system.
And selecting the communication equipment with the maximum RSSI signal intensity as second communication equipment to ensure the stability and accuracy of information backtracking.
For the condition that the number of the communication equipment is not more than 2, directly selecting the communication equipment with the maximum RSSI signal intensity as second communication equipment; and if the number of the communication devices is greater than 2, determining the communication device with the highest RSSI signal strength among the 2 communication devices with the earliest group entering time as the second communication device, so that the reliability of information backtracking can be ensured, the task processing amount of the communication devices is reduced, and the information backtracking efficiency is improved.
For the acquisition of the RSSI information, the following method may be adopted:
(1) periodically sending heartbeat messages to each communication device in the group;
in the embodiment of the present invention, the heartbeat packet includes user-related information corresponding to the communication device, for example: location information, unique ID, nickname, avatar, gender, group ID, etc.;
(2) when receiving heartbeat messages from other communication equipment, determining RSSI (received signal strength indicator) information of the communication equipment corresponding to the heartbeat messages;
in the embodiment of the invention, when the heartbeat messages sent by other communication equipment are received, the RSSI information of the corresponding communication equipment is determined, so that the RSSI signal intensity of other communication equipment can be obtained in real time. The specific method for determining the RSSI information may adopt an existing RSSI determination method, which is not limited in the embodiment of the present invention.
The RSSI information may be stored in an app of the communication device, and optionally, the determined RSSI information is valid for a preset time period, for example: the RSSI information is valid within 3 minutes.
It should be noted that the above RSSI information acquisition method is applicable to each communication device in the group, so that each communication device has the capability of becoming a backtracking point, and the reliability of group backtracking is improved.
Step 606: sending a backtracking message to the second communication equipment;
optionally, for the case that the first communication device is a new access group, before step 606, the method further includes the following steps:
(1) requesting a group owner of the group to start information backtracking;
the group owner may be an originator of the group or any member of the group.
(2) When the group owner of the group agrees, go to step 606;
it is to be understood that if the group owner is a response request, displaying on the first communication device that the group owner is not responding; if the group owner rejects the request, the group owner rejection is displayed on the first communication device.
Step 607: target information is received from the second communication device.
In the embodiment of the invention, the backtracking point is preferentially selected according to the group member group entering time and the RSSI signal strength, the target time interval is sent to the backtracking point, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
The backtracking message in each method flow comprises one or more of the following items:
the type field is used for expressing the message type of the backtracking message;
a payload (payload) field including information corresponding to the type field.
It should be noted that the above-mentioned backtracking message may be used for each information interaction in the whole information backtracking process.
Further, an embodiment of the present invention provides a structure of a trace-back packet, which is specifically as follows;
| 5 | 2 | 8 | 8 | 1 | …… |
| lead code | Synchronous word | Destination ID | Source ID | Type (B) | Payload |
The backtracking message further comprises: preamble field, sync word field, destination ID field, source ID field
Specifically, fig. 7 shows a trace-back message with a preamble of 5 Bytes (Bytes); 2 Bytes of sync word; target IDs of 8 Bytes, i.e., the ID of the recipient; the source ID of 8 Bytes, i.e. the ID of the sender.
1 byte message type:
different types may have different numbering, for example: 0-6 represent message and heartbeat types;
the request information backtracking type 7 is represented, and the payload corresponding to the type 7 specifically carries the following information:
| 4Bytes | 4Bytes |
| time stamp of start time | Time stamp of end time |
8, the response type of the group owner to the request information backtracking message is represented, and payload corresponding to the 8 types specifically carries the following information:
the type 9 indicates a backtracking start type, and payload corresponding to the type 9 specifically carries information as follows:
| 4Bytes | 4Bytes |
| time stamp of start time | Time stamp of end time |
10 indicates an information backtracking end type, and payload corresponding to the 10 type may be no information.
It should be noted that the correspondence between the type field and the content of the payload field is only an example, and the embodiment of the present invention does not specifically limit the correspondence between the type field and the content of the payload field.
Referring to fig. 7, an embodiment of the present invention provides a first communication device 700, including: a first transceiver 701 and a first processor 702;
wherein the first processor 702 is configured to determine a second communication device among at least one communication device in the group when accessing the group;
the first transceiver 701 is configured to send a backtracking message to the second communication device, where the backtracking message includes a target time interval, and the backtracking message is used to request the second communication device to backtrack target information in the target time interval;
the first transceiver 701 is further configured to receive the target information from the second communication device.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the first transceiver 701 is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the first processor 702 is further configured to determine, when receiving the heartbeat packet from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
Optionally, the first processor 702 is further configured to determine, according to the RSSI information, the communication device in the group that has the highest RSSI signal strength and is online as the second communication device.
Optionally, the first processor 702 is further configured to determine the number of communication devices in the group that are online;
the first processor 702 is further configured to determine that when the number of the online communication devices is greater than 2, select 2 communication devices with the earliest group entry time;
the first processor 702 is further configured to determine a communication device with the largest RSSI signal strength among the 2 earliest communication devices in the group entering time to be the second communication device.
Optionally, the first transceiver 701 is further configured to request a group owner of the group to start information backtracking;
the first processor 702 is further configured to execute the step of sending a backtracking packet to the second communication device when the group owner of the group agrees.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
In the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Referring to fig. 8, an embodiment of the present invention provides a second communication device 800, including: a second transceiver 801 and a second processor 802;
the second transceiver 801 is configured to receive a trace-back packet from a first communication device, where the trace-back packet includes a target time interval;
the second processor 802, configured to determine target information within the target time interval;
the second transceiver 801 is further configured to transmit the target information to the first communication device.
Optionally, when the first communication device reconnects to the group for disconnection, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication device;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
Optionally, the second transceiver 801 is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the second processor 802 is further configured to determine, when receiving the heartbeat packet from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
Optionally, the trace-back message includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
In the embodiment of the invention, when the communication equipment joins the group, one communication equipment is selected from the group as a backtracking point, the target time interval is sent to the backtracking point through the backtracking message, and the backtracking point is information in the backtracking target time interval of the communication equipment, so that the group information backtracking without a centralized network is realized.
Referring to fig. 9, an embodiment of the present invention provides a communication apparatus 900, including: a processor 901, a transceiver 902, a memory 903 and a bus interface.
Among other things, the processor 901 may be responsible for managing the bus architecture and general processing. The memory 903 may store data used by the processor 901 in performing operations.
In this embodiment of the present invention, the communication device 900 may further include: a program stored on the memory 903 and executable on the processor 901, which when executed by the processor 901 performs the steps of the method provided by embodiments of the present invention.
In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further in connection with embodiments of the present invention. The bus interface provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (24)
1. An information backtracking method applied to a first communication device in a group of decentralized networks, the method comprising:
determining a second communication device in at least one communication device in the group when accessing the group;
sending a backtracking message to the second communication device, wherein the backtracking message comprises a target time interval and is used for requesting the second communication device to backtrack target information in the target time interval;
receiving the target information from the second communication device.
2. The method of claim 1,
when the first communication equipment is disconnected and reconnected into the group, the target time interval is a time interval between the disconnection time point and the reconnection time point of the first communication equipment;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
3. The method of claim 1, further comprising:
periodically sending heartbeat messages to each communication device in the group, wherein the heartbeat messages comprise user related information corresponding to the communication devices;
and when the heartbeat message is received from other communication equipment, determining the Received Signal Strength Indication (RSSI) information of the communication equipment corresponding to the heartbeat message.
4. The method of claim 3, wherein determining the second communication device among the at least one communication device in the group comprises:
and according to the RSSI information, determining the communication equipment which has the maximum RSSI signal intensity and is on line in the group as the second communication equipment.
5. The method of claim 4, wherein before the determining the communication device with the highest RSSI signal strengths in the group as the second communication device according to the RSSI information, the method further comprises:
determining a number of communication devices in the group that are online;
when the number of the on-line communication equipment is more than 2, selecting 2 communication equipment with the earliest time for entering the group;
accordingly, determining the communication device with the highest RSSI signal strength in the group as the second communication device comprises:
and determining the communication device with the maximum RSSI signal strength in the 2 communication devices with the earliest group entering time as the second communication device.
6. The method according to claim 2, wherein when the first communication device is newly accessing the group, before the sending the trace-back packet to the second communication device, the method further comprises:
requesting a group owner of the group to start information backtracking;
and when the group owner of the group agrees, executing the step of sending a backtracking message to the second communication equipment.
7. The method according to any one of claims 1 to 6, wherein the trace-back message comprises one or more of:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
8. An information backtracking method applied to a second communication device in a group of a decentralized network, the method comprising:
receiving a backtracking message from a first communication device, wherein the backtracking message comprises a target time interval;
determining target information within the target time interval;
and sending the target information to the first communication equipment.
9. The method of claim 8,
when the first communication equipment is disconnected and reconnected into the group, the target time interval is a time interval between the disconnection time point and the reconnection time point of the first communication equipment;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
10. The method of claim 8, further comprising:
periodically sending heartbeat messages to each communication device in the group, wherein the heartbeat messages comprise user related information corresponding to the communication devices;
and when the heartbeat message is received from other communication equipment, determining the RSSI information of the communication equipment corresponding to the heartbeat message.
11. The method according to any one of claims 8 to 10, wherein the trace-back message comprises one or more of:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
12. A first communications device, comprising: a first transceiver and a first processor, wherein,
the first processor is configured to determine a second communication device among at least one communication device in a group when the group is accessed;
the first transceiver is configured to send a backtracking message to the second communication device, where the backtracking message includes a target time interval, and the backtracking message is used to request the second communication device to backtrack target information in the target time interval;
the first transceiver is further configured to receive the target information from the second communication device.
13. The first communications device of claim 12,
when the first communication equipment is disconnected and reconnected into the group, the target time interval is a time interval between the disconnection time point and the reconnection time point of the first communication equipment;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
14. The first communications device of claim 12,
the first transceiver is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the first processor is further configured to determine, when the heartbeat packet is received from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
15. The first communications device of claim 14,
the first processor is further configured to determine, according to the RSSI information, the communication device in the group that has the highest RSSI signal strength and is online as the second communication device.
16. The first communications device of claim 15,
the first processor is further configured to determine a number of communication devices in the group that are online;
the first processor is further configured to determine that when the number of the online communication devices is greater than 2, select 2 communication devices with the earliest group entry time;
the first processor is further configured to determine, as the second communication device, a communication device with a largest RSSI signal strength among the 2 communication devices with the earliest group entry time.
17. The first communications device of claim 13,
the first transceiver is further configured to request a group owner of the group to begin information backtracking;
the first processor is further configured to execute the step of sending a backtracking packet to the second communication device when the group owner of the group agrees.
18. The first communications device according to any one of claims 12 to 17, wherein the trace-back message includes one or more of:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
19. A second communications device, comprising: a second transceiver and a second processor, wherein,
the second transceiver is configured to receive a backtracking packet from the first communication device, where the backtracking packet includes a target time interval;
the second processor is configured to determine target information within the target time interval;
the second transceiver is further configured to send the target information to the first communication device.
20. The second communication device of claim 19,
when the first communication equipment is a disconnection reconnection group, the target time interval is a time interval between a disconnection time point and a reconnection time point of the first communication equipment;
when the first communication device is newly accessed to the group, the target time interval is a time interval selected by the first communication device.
21. The second communication device of claim 19,
the second transceiver is further configured to periodically send a heartbeat message to each communication device in the group, where the heartbeat message includes user-related information corresponding to the communication device;
the second processor is further configured to determine, when the heartbeat packet is received from another communication device, RSSI information of the communication device corresponding to the heartbeat packet.
22. The second communications device according to any one of claims 19 to 21, wherein the backtracking packet includes one or more of the following:
the type field is used for expressing the message type of the backtracking message;
a payload field including information corresponding to the type field.
23. A communication device comprising a processor, a memory, and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the information backtracking method according to any one of claims 1 to 7 or the steps of the information backtracking method according to any one of claims 8 to 11.
24. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the information backtracking method according to any one of claims 1 to 7 or the steps of the information backtracking method according to any one of claims 8 to 11.
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